12219732 has 36 divisors (see below), whose sum is σ = 35302176. Its totient is φ = 3491280.

The previous prime is 12219709. The next prime is 12219737. The reversal of 12219732 is 23791221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 12219696 and 12219705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23994 + ... + 24497.

It is an arithmetic number, because the mean of its divisors is an integer number (980616).

Almost surely, 2^12219732 is an apocalyptic number.

12219732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12219732 is an abundant number, since it is smaller than the sum of its proper divisors (23082444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12219732 is a wasteful number, since it uses less digits than its factorization.

12219732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48508 (or 48503 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12219732 is about 3495.6733256985. The cubic root of 12219732 is about 230.3317958564.

The spelling of 12219732 in words is "twelve million, two hundred nineteen thousand, seven hundred thirty-two".